Electric Literature of 13600-49-2 ,Some common heterocyclic compound, 13600-49-2, molecular formula is C8H5F3N2, its traditional synthetic route has been very mature, but the traditional synthetic route has various shortcomings, such as complicated route, low yield, poor purity, etc., below Introduce a new synthetic route.
A. tert-Butyl ((6-Methyl-4-(trifluoromethyl)pyridin-3-yl)methyl)carbamate 6-Methyl-4-(trifluoromethyl)nicotinonitrile (1.0 equiv.) was dissolved in MeOH (0.1 M), wet Raney nickel was added, followed by ammonium hydroxide (32 equiv.). The reaction vessel was evacuated three times, refilled with hydrogen and then equipped with a hydrogen balloon and stirred at room temperature for 48 h. The mixture was filtered through a short pad of celite which was washed with MeOH. Ethanol was added to remove excess water upon concentration. The volatile solvents were removed to afford crude product which was dissolved in DCM. DIEA (1.8 equiv.) was added followed by BOC2O (0.95 equiv.). The reaction was stirred at room temperature for 1 h. The volatile solvent was removed and the residue was purified via Biotage chromatography (10-100% ethyl acetate in hexanes) to afford tert-butyl ((6-methyl-4-(trifluoromethyl)pyridin-3-yl)methyl)carbamate (90% yield); MS(ESI) m/z 290.3 [M+1]+.
These compound has a wide range of applications. It is believed that with the continuous development of the source of the synthetic route,13600-49-2, its application will become more common.
Reference:
Patent; Papa, Patrick; Cathers, Brian Edwin; CALABRESE, Andrew Antony; WHITEFIELD, Brandon Wade; BENNETT, Brydon; CASHION, Daniel; MORTENSEN, Deborah; HUANG, Dehua; TORRES, Eduardo; PARNES, Jason; SAPIENZA, John; HANSEN, Joshua; LEFTHERIS, Katerina; CORREA, Matthew; DELGADO, Maria Mercedes; RAHEJA, Neil; BAHMANYAR, Sami; HEGDE, Sayee; NORRIS, Stephen; PLANTEVIN-KRENITSKY, Veronique; US2015/175557; (2015); A1;,
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